Extended Data Fig. 4: Drawings of lithic artefacts from layer I of Bacho Kiro Cave.
From: Initial Upper Palaeolithic Homo sapiens from Bacho Kiro Cave, Bulgaria
Pointed retouched blade with slightly oblique truncation and base modified by inverse retouch (1), pointed blade fragments (2 and 5, which has an oblique truncation and slight notch on the left edge, and was perhaps intentionally fragmented), pointed, small blades fragments (3, 7, 8 and 9), pointed blade fragment with opposing pseudo-burin blows on the apex and on the distal fracture edge (perhaps indicating use as a projectile) (4) and Levallois flake (6). Drawings by I.K. and T. Tsanova).
